I am an Artist and Musician working in VR and it has occured to me that users need an EYEBALL CLICK button.
Headsets need an EYEBALL CLICK button. Here's how it works. The headset should have two cameras on the outside of the set. When the user activates the EYEBALL CLICK button in side VR the two cameras cut in sending video from the real world to the person inside VR so they can see through their headset gear without taking off all their gear. When they want to go back into VR they press a button somewhere and VR resumes.